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* Fix bug in PEI's virtual-register scavengingHal Finkel2013-04-05
| | | | | | | | | | | | | | | | | | | | This change fixes a bug that I introduced in r178058. After a register is scavenged using one of the available spills slots the instruction defining the virtual register needs to be moved to after the spill code. The scavenger has already processed the defining instruction so that registers killed by that instruction are available for definition in that same instruction. Unfortunately, after this, the scavenger needs to iterate through the spill code and then visit, again, the instruction that defines the now-scavenged register. In order to avoid confusion, the register scavenger needs the ability to 'back up' through the spill code so that it can again process the instructions in the appropriate order. Prior to this fix, once the scavenger reached the just-moved instruction, it would assert if it killed any registers because, having already processed the instruction, it believed they were undefined. Unfortunately, I don't yet have a small test case. Thanks to Pranav Bhandarkar for diagnosing the problem and testing this fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178845 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up some confusing language, and use more realistic examples.Jakob Stoklund Olesen2013-04-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178828 91177308-0d34-0410-b5e6-96231b3b80d8
* CostModel: Add parameter to instruction cost to further classify operand valuesArnold Schwaighofer2013-04-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | On certain architectures we can support efficient vectorized version of instructions if the operand value is uniform (splat) or a constant scalar. An example of this is a vector shift on x86. We can efficiently support for (i = 0 ; i < ; i += 4) w[0:3] = v[0:3] << <2, 2, 2, 2> but not for (i = 0; i < ; i += 4) w[0:3] = v[0:3] << x[0:3] This patch adds a parameter to getArithmeticInstrCost to further qualify operand values as uniform or uniform constant. Targets can then choose to return a different cost for instructions with such operand values. A follow-up commit will test this feature on x86. radar://13576547 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178807 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r178713Evan Cheng2013-04-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178769 91177308-0d34-0410-b5e6-96231b3b80d8
* Document the return value of SmallSet insert.Nadav Rotem2013-04-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178742 91177308-0d34-0410-b5e6-96231b3b80d8
* Make it possible to include llvm-c without including C++ headers. Patch by ↵Evan Cheng2013-04-03
| | | | | | Filip Pizlo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178713 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement the "mips endian" for r_info.Rafael Espindola2013-04-03
| | | | | | | | Normally r_info is just a 32 of 64 bit number matching the endian of the rest of the file. Unfortunately, mips 64 bit little endian is special: The top 32 bits are a little endian number and the following 32 are a big endian one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178694 91177308-0d34-0410-b5e6-96231b3b80d8
* Implements low-level object file format specific output for COFF andEric Christopher2013-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ELF with support for: - File headers - Section headers + data - Relocations - Symbols - Unwind data (only COFF/Win64) The output format follows a few rules: - Values are almost always output one per line (as elf-dump/coff-dump already do). - Many values are translated to something readable (like enum names), with the raw value in parentheses. - Hex numbers are output in uppercase, prefixed with "0x". - Flags are sorted alphabetically. - Lists and groups are always delimited. Example output: ---------- snip ---------- Sections [ Section { Index: 1 Name: .text (5) Type: SHT_PROGBITS (0x1) Flags [ (0x6) SHF_ALLOC (0x2) SHF_EXECINSTR (0x4) ] Address: 0x0 Offset: 0x40 Size: 33 Link: 0 Info: 0 AddressAlignment: 16 EntrySize: 0 Relocations [ 0x6 R_386_32 .rodata.str1.1 0x0 0xB R_386_PC32 puts 0x0 0x12 R_386_32 .rodata.str1.1 0x0 0x17 R_386_PC32 puts 0x0 ] SectionData ( 0000: 83EC04C7 04240000 0000E8FC FFFFFFC7 |.....$..........| 0010: 04240600 0000E8FC FFFFFF31 C083C404 |.$.........1....| 0020: C3 |.| ) } ] ---------- snip ---------- Relocations and symbols can be output standalone or together with the section header as displayed in the example. This feature set supports all tests in test/MC/COFF and test/MC/ELF (and I suspect all additional tests using elf-dump), making elf-dump and coff-dump deprecated. Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178679 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement sectionContainsSymbol for ELF.Eric Christopher2013-04-03
| | | | | | Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178677 91177308-0d34-0410-b5e6-96231b3b80d8
* When dumping clear the arm/thumb flag for now.Eric Christopher2013-04-03
| | | | | | Patch by Nico Rieck! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178676 91177308-0d34-0410-b5e6-96231b3b80d8
* Add MDBuilder utilities for path-aware TBAA.Manman Ren2013-04-02
| | | | | | | | | | | Add utilities to create struct nodes in TBAA type DAG and to create path-aware tags. The format of struct nodes in TBAA type DAG: a unique name, a list of fields with field offsets and field types. The format of path-aware tags: a base type in TBAA type DAG, an access type and an offset relative to the base type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178564 91177308-0d34-0410-b5e6-96231b3b80d8
* Count processor resources individually in MachineTraceMetrics.Jakob Stoklund Olesen2013-04-02
| | | | | | | | | | | | | | | The new instruction scheduling models provide information about the number of cycles consumed on each processor resource. This makes it possible to estimate ILP more accurately than simply counting instructions / issue width. The functions getResourceDepth() and getResourceLength() now identify the limiting processor resource, and return a cycle count based on that. This gives more precise resource information, particularly in traces that use one resource a lot more than others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178553 91177308-0d34-0410-b5e6-96231b3b80d8
* unindent the file to follow coding standards, change class doc commentChris Lattner2013-04-01
| | | | | | | | to be correct. No functionality or behavior change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178511 91177308-0d34-0410-b5e6-96231b3b80d8
* Mips direct object exception handling regressionJack Carter2013-04-01
| | | | | | | | | | | | | | | | | | | Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178506 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for vector data types in the LLVM interpreter.Nadav Rotem2013-04-01
| | | | | | | | | Patch by: Veselov, Yuri <Yuri.Veselov@intel.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178469 91177308-0d34-0410-b5e6-96231b3b80d8
* Whitespace cleanupJoe Abbey2013-04-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178454 91177308-0d34-0410-b5e6-96231b3b80d8
* Object: Turn a couple of degenerate for loops into while loops.Benjamin Kramer2013-03-30
| | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178413 91177308-0d34-0410-b5e6-96231b3b80d8
* SmallVector and SmallPtrSet allocations now power-of-two aligned.Jean-Luc Duprat2013-03-29
| | | | | | | | This time tested on both OSX and Linux. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178377 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the old CodePlacementOpt pass.Benjamin Kramer2013-03-29
| | | | | | It was superseded by MachineBlockPlacement and disabled by default since LLVM 3.1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178349 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Fix allocations of SmallVector and SmallPtrSet so they are more ↵Rafael Espindola2013-03-29
| | | | | | | | | | | | | | | | | prone to" This reverts commit 617330909f0c26a3f2ab8601a029b9bdca48aa61. It broke the bots: /home/clangbuild2/clang-ppc64-2/llvm.src/unittests/ADT/SmallVectorTest.cpp:150: PushPopTest /home/clangbuild2/clang-ppc64-2/llvm.src/unittests/ADT/SmallVectorTest.cpp:118: Failure Value of: v[i].getValue() Actual: 0 Expected: value Which is: 2 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178334 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix allocations of SmallVector and SmallPtrSet so they are more prone toJean-Luc Duprat2013-03-29
| | | | | | | | being power-of-two sized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178332 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support of RDSEED defined in AVX2 extensionMichael Liao2013-03-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178314 91177308-0d34-0410-b5e6-96231b3b80d8
* Seciton 24.2.2 of the C++ standard, [iterator.iterators], Table 106Howard Hinnant2013-03-28
| | | | | | | | | | | | | | | | | | | | | requires that the return type of *r for all iterators r be reference, where reference is defined in [iterator.requirements.general]/p11 as iterator_traits<X>::reference, and X is the type of r. But in CFG.h, the dereference operator of PredIterator and SuccIterator return pointer, not reference. Furthermore the nested type reference is value_type&, which is not the type returned from operator*(). This patch simply makes the iterator::reference type value_type*, which is what the operator*() returns, and then re-lables the return type as reference. From a functionality point of view, the only difference is that the nested reference type is now value_type* instead of value_type&. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178240 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Updated ELF relocation test for .eh_frame section"Michael Gottesman2013-03-28
| | | | | | | | This reverts commit c8d65364223a04b179958a50a4bf0f89b21dd7d2. This broke a bunch of the buildbots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178222 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Adding DIImportedModules to DIScopes."David Blaikie2013-03-28
| | | | | | | | | This reverts commit 342d92c7a0adeabc9ab00f3f0d88d739fe7da4c7. Turns out we're going with a different schema design to represent DW_TAG_imported_modules so we won't need this extra field. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178215 91177308-0d34-0410-b5e6-96231b3b80d8
* Updated ELF relocation test for .eh_frame sectionJack Carter2013-03-27
| | | | | | | | | Made sure we were looking a correct section Added Mips32/64 as an extra check Updated llvm-objdump to generate symbolic info for Mips relocations git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178190 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a boolean parameter to the llvm::report_fatal_error() function to indicatedChad Rosier2013-03-27
| | | | | | | | if crash diagnostics should be generated. By default this is enabled. Part of rdar://13296693 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178161 91177308-0d34-0410-b5e6-96231b3b80d8
* Cleanup the simplify_type implementation.Rafael Espindola2013-03-27
| | | | | | | | | | | | | | | | | | | | As far as simplify_type is concerned, there are 3 kinds of smart pointers: * const correct: A 'const MyPtr<int> &' produces a 'const int*'. A 'MyPtr<int> &' produces a 'int *'. * always const: Even a 'MyPtr<int> &' produces a 'const int*'. * no const: Even a 'const MyPtr<int> &' produces a 'int*'. This patch then does the following: * Removes the unused specializations. Since they are unused, it is hard to know which kind should be implemented. * Make sure we don't drop const. * Fix the default forwarding so that const correct pointer only need one specialization. * Simplifies the existing specializations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178147 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding DIImportedModules to DIScopes.David Blaikie2013-03-27
| | | | | | | | | | | | This is just the basic groundwork for supporting DW_TAG_imported_module but I wanted to commit this before pushing support further into Clang or LLVM so that this rather churny change is isolated from the rest of the work. The major churn here is obviously adding another field (within the common DIScope prefix) to all DIScopes (files, classes, namespaces, lexical scopes, etc). This should be the last big churny change needed for DW_TAG_imported_module/using directive support/PR14606. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178099 91177308-0d34-0410-b5e6-96231b3b80d8
* Make DIBuilder::createClassType more type safe by returning DICompositeType ↵David Blaikie2013-03-26
| | | | | | rather than DIType git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178091 91177308-0d34-0410-b5e6-96231b3b80d8
* DebugInfo: more support for mutating DICompositeType to reduce magic number ↵David Blaikie2013-03-26
| | | | | | usage in Clang git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178090 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a boolean parameter to the ExecuteAndWait static function to indicatedChad Rosier2013-03-26
| | | | | | | | | | | if execution failed. ExecuteAndWait returns -1 upon an execution failure, but checking the return value isn't sufficient because the wait command may return -1 as well. This new parameter is to be used by the clang driver in a subsequent commit. Part of rdar://13362359 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178087 91177308-0d34-0410-b5e6-96231b3b80d8
* Add XTEST codegen supportMichael Liao2013-03-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178083 91177308-0d34-0410-b5e6-96231b3b80d8
* Debug Info: Provide a means to update the members of a composite typeDavid Blaikie2013-03-26
| | | | | | | | This will be used to factor out some uses of magic number operand offsets inside Clang where these fields were updated in an effort to resolve forward declarations/circular references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178078 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the register scavenger for targets that provide custom spillingHal Finkel2013-03-26
| | | | | | | | | | | As pointed out by Richard Sandiford, my recent updates to the register scavenger broke targets that use custom spilling (because the new code assumed that if there were no valid spill slots, than spilling would be impossible). I don't have a test case, but it should be possible to create one for Thumb 1, Mips 16, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178073 91177308-0d34-0410-b5e6-96231b3b80d8
* Update PEI's virtual-register-based scavenging to support multiple ↵Hal Finkel2013-03-26
| | | | | | | | | | | | | | | | | | | simultaneous mappings The previous algorithm could not deal properly with scavenging multiple virtual registers because it kept only one live virtual -> physical mapping (and iterated through operands in order). Now we don't maintain a current mapping, but rather use replaceRegWith to completely remove the virtual register as soon as the mapping is established. In order to allow the register scavenger to return a physical register killed by an instruction for definition by that same instruction, we now call RS->forward(I) prior to eliminating virtual registers defined in I. This requires a minor update to forward to ignore virtual registers. These new features will be tested in forthcoming commits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178058 91177308-0d34-0410-b5e6-96231b3b80d8
* PowerPC: Simplify handling of fixups.Ulrich Weigand2013-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MCTargetDesc/PPCMCCodeEmitter.cpp current has code like: if (isSVR4ABI() && is64BitMode()) Fixups.push_back(MCFixup::Create(0, MO.getExpr(), (MCFixupKind)PPC::fixup_ppc_toc16)); else Fixups.push_back(MCFixup::Create(0, MO.getExpr(), (MCFixupKind)PPC::fixup_ppc_lo16)); This is a problem for the asm parser, since it requires knowledge of the ABI / 64-bit mode to be set up. However, more fundamentally, at this point we shouldn't make such distinctions anyway; in an assembler file, it always ought to be possible to e.g. generate TOC relocations even when the main ABI is one that doesn't use TOC. Fortunately, this is actually completely unnecessary; that code was added to decide whether to generate TOC relocations, but that information is in fact already encoded in the VariantKind of the underlying symbol. This commit therefore merges those fixup types into one, and then decides which relocation to use based on the VariantKind. No changes in generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178007 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix SCEV forgetMemoizedResults should search and destroy backedge exprs.Andrew Trick2013-03-26
| | | | | | | | | | | | | | | Fixes PR15570: SEGV: SCEV back-edge info invalid after dead code removal. Indvars creates a SCEV expression for the loop's back edge taken count, then determines that the comparison is always true and removes it. When loop-unroll asks for the expression, it contains a NULL SCEVUnknkown (as a CallbackVH). forgetMemoizedResults should invalidate the loop back edges expression. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177986 91177308-0d34-0410-b5e6-96231b3b80d8
* Split out the IRReader header and the utility functions it provides intoChandler Carruth2013-03-26
| | | | | | | | | | | | | | | | | | | | | | | | its own library. These functions are bridging between the bitcode reader and the ll parser which are in different libraries. Previously we didn't have any good library to do this, and instead played fast and loose with a "header only" set of interfaces in the Support library. This really doesn't work well as evidenced by the recent attempt to add timing logic to the these routines. As part of this, make them normal functions rather than weird inline functions, and sink the implementation into the library. Also clean up the header to be nice and minimal. This requires updating lots of build system dependencies to specify that the IRReader library is needed, and several source files to not implicitly rely upon the header file to transitively include all manner of other headers. If you are using IRReader.h, this commit will break you (the header moved) and you'll need to also update your library usage to include 'irreader'. I will commit the corresponding change to Clang momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177971 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new watchdog timer interface. The interface does not permit handling ↵Nick Lewycky2013-03-26
| | | | | | | | | | timeouts, so it's only really useful if you're going to crash anyways. Use it in the pretty stack trace printer to kill the compiler if we hang while printing the stack trace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177962 91177308-0d34-0410-b5e6-96231b3b80d8
* [ELF] dont compute symbolname size in every loopShankar Easwaran2013-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177903 91177308-0d34-0410-b5e6-96231b3b80d8
* reflect comment to the official referenceShankar Easwaran2013-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177895 91177308-0d34-0410-b5e6-96231b3b80d8
* [ELF] add elf_hash function to compute the hash value of a symbol in the ↵Shankar Easwaran2013-03-25
| | | | | | dynamic symbol table git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177872 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a GC plugin for ErlangYiannis Tsiouris2013-03-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177867 91177308-0d34-0410-b5e6-96231b3b80d8
* Refine fenv.h handling: check if the desired macros exist, before usingJoerg Sonnenberger2013-03-25
| | | | | | | | it. NetBSD/ARM and TILE-Gx are examples for platforms that have an unusable fenv.h and this avoids the need for a blacklist. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177865 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow the register scavenger to spill multiple registersHal Finkel2013-03-22
| | | | | | | | | | | | | | | | | | This patch lets the register scavenger make use of multiple spill slots in order to guarantee that it will be able to provide multiple registers simultaneously. To support this, the RS's API has changed slightly: setScavengingFrameIndex / getScavengingFrameIndex have been replaced by addScavengingFrameIndex / isScavengingFrameIndex / getScavengingFrameIndices. In forthcoming commits, the PowerPC backend will use this capability in order to implement the spilling of condition registers, and some special-purpose registers, without relying on r0 being reserved. In some cases, spilling these registers requires two GPRs: one for addressing and one to hold the value being transferred. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177774 91177308-0d34-0410-b5e6-96231b3b80d8
* Swap the DIFile in DILexicalBlockFile out for the raw name/directory pairDavid Blaikie2013-03-22
| | | | | | This is the last change in transitioning all DIScopes to have a common prefix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177756 91177308-0d34-0410-b5e6-96231b3b80d8
* reorder the fields in DILexicalBlockFile to match the common prefix for DIScopesDavid Blaikie2013-03-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177754 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r177675. This is language-specific and shouldn't be in the API.Bill Wendling2013-03-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177748 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor out the DIFile parameter to DILexicalBlock to refer to the raw ↵David Blaikie2013-03-22
| | | | | | file/directory pair git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177742 91177308-0d34-0410-b5e6-96231b3b80d8
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